Glass cutting tool



Jan. 4, 1966 c. H. MOELLER GLASS CUTTING TOOL 4 Sheets-Sheet 1 Filed July 25, 1963 Jan. 4, 1966 C, H. MQELLER 3,227,016?

GLASS CUTTING TOOL Filed July 25, 1965 M a 9a y;

4 Sheets-Sheet 5 FIGB Jan. 4, 1966 c. H. MoELLr-:R

GLASS CUTTING TOOL 4 Sheets-Sheet 4 Filed July 25 1963 FIGS Firmen/fr,

United States Patent O 3,227,4ll6 GLASS CUTTING T001. Chester H. Moeller, S316 Racquet Drive, Normandy, Mo. Filed .lnly 2S, 1963, Ser. No. 297,599 1I Claims. (Cl. SI5-ll) The present invention relates generally to glass cutting tools and the like and more particularly to a versatile tool capable of cutting diferent sizes and shapes of glass panes and capable of operating in conjunction with glass framing devices.

Many glass cutting tools have been constructed and used heretofore. For the most part, however, the known devices are difficult and time consuming to operate, are relatively inllexible for cutting different sizes and shapes of panes, and require relocating panes to perform succeeding operations thereon. The known devices are also structurally relatively complicated and are relatively expensive. Furthermore, the known devices require relatively skilled operators.

These and other disadvantages and shortcomings of known glass cutting devices are overcome by the present invention which teaches the construction and operation of a novel glass cutting device including a table having locator means thereon for accurately positioning a pane of glass to be cut, a cutter member including guide means therefor positioned above the table, means for moving the cutter member along said guide means, and other means for predeterminedly moving the cutter member into andout of cutting engagement with a pane of glass positioned on the table during said movement. The subject invention also includes a second movable cutter assembly including guide means therefor for cutting along a different part of the glass pane, and means for predeterminedly positioning a pane of glass and a framing device therefor on the table during cutting operations.

A main object of the present invention is to provide improved means for cutting glass panes and the like.

Another object is to provide a relatively inexpensive glass cutting tool.

Another object is to provide a glass cutting tool that can be operated accurately even by relatively unskilled persons.

`Another object is to provide a versatile glass cutting tool which is easily and quickly adjustable for cutting diferent sizes and shapes of glass panes.

Another object is to provide a glass cutter tool that can operate to cut glass to fit different sizes and shapes of framing devices.

Another object is to provide a glass cutter tool that is relatively safe to use.

Another object is to substantially reduce or eliminate human errors in glass cutting operations.

Another object is to increase the speed, accuracy, flexibility and efficiency of glass cutting operations. These and other objects and advantages of the present device will become apparent after considering the following detailed specification of several embodiments thereof in conjunction with the accompanying drawings, wherein:

FIG. 1 is a top plan view of a glass cutting device constructed according to the present invention;

` FIG. 2 is a cross-sectional view taken along line 2 2 of FIG. l;

FIG. 3 is an enlarged fragmentary top plan View showing one of the movable cutter assemblies employed on the subject device as seen along line 3-3 or FIG. 2;

FIG. 4 is an enlarged side elevational View of the cutter assembly of FIG., 3;

" FIG. 5 is an enlarged side elevational view, partly in Vthe operator.

3,227,016 Patented Jari. 4, 1966 section, of another movable cutter assembly, taken on line 5-5 of FIG. l;

FIG. 6 is an enlarged fragmentary cross-sectional view taken online 6-6 of FIG. l;

FIG. 7 is a bottom view of the clamping means shown 1n FIG. 6;

FIG. 8 is a schematic view of a hydraulic system for the subject device; and

FIG. 9 is a schematic View of an electric circuit for the subject cutting tool.

Referring to the drawings more particularly by reference numbers, number 1d is a cutting tool constructed according to the present invention. The tool l@ includes a cutting table l2 supported on legs 14. The table has a cutout portion I6 in one side where the operator stands to be near to the work.

Tracks for movably supporting and guiding cutter assemblies are positioned extending along two sides of the table as shown in FIG. 1. One of the tracks is numbered I8 and extends along the far side of the table 12 from The track 18 supports and guides a movable cutter assembly 20. Another track 22 extends along the right side of the table from Where the operator stands and supports and guides another movable cutter assembly 24.

The track 18 includes two parallel rails 26 and 28 which are supported above the table by spaced brackets 30 and 32. The cutter assembly 29 includes a slide portion 34 having spaced pairs of bushings 36 that slide on the rails 26 and 28. The slide portion 34 also has eyelets 38 and 4@ on opposite sides thereof which are connected to opposite ends of a liexible drive cable 42. The cable 42. extends from the opposite ends of the slide portion 34 along the track 18 between the rails 26 and 28, and one end of the cable l2 extends around a pulley 44 at one end of the track 3.8, and the opposite end portion of the cable extends around a similar pulley 46 located near the other end of the same track. The cable 42 also extends downwardly through holes in the table and is wound around a drive wheel 48 centrally located under the table I2.

The drive wheel 48 is mounted on a shaft Si) located under the table, and the shaft 50 also carries a pinion gear 52 that meshes with a rack gear 54 which is connected to a piston and rod assembly 56. The assembly S6 is part of a hydraulic motor 58 also mounted under the table. T he motor 5S has conduit connections at both ends which are also connected to a controlled source of hydraulic pressure which will be described more in detail hereinafter. At this point it is sufficient to note that when the drive wheel l is rotated in one direction the cutter assembly 20 will move along the track I8 in one direction, and when the drive wheel is rotated in the opposite direction the assembly il@ will move in the opposite direction.

The slide portion 34 of the cutter assembly Ztl extends beyond the inner rail 28 over the cutting table 12 and pivotally supports a glass cutter tool ell which is mounted on a tool` carrier member 62. The carrier member d2 is in turn pivotally supported on a bracket 64 which is adjustably attached to a side edge of the slide portion 345 by threaded connectors which extend through elongated openings 65. The carrier 62 has an upwardly extending arm portion 66 which is connected to a piston and rod assembly 68 of a hydraulic motor 76. The motor 79 is mounted on a plate member or bracket 72 that pivots on a shaft 74 attached to the upper surface of the slide 34. This enables the motor 'ill to be operated without binding.

The cutter tool 60 is installed in a hole 7d in the carrier member 62 andis maintained in position by a set screw '78. The cutter tool 60 may be a commercial glass cutting tool of a well known type, and the tool is easily and quickly installed and replaced.

One end of the motor 719 is connected to the hydraulic system by a coiled flexible conduit 81B positioned on the rail 28. Suitable fittings are provided for the ends of the conduit 8d to connect it to the motor 711 and to another conduit 84 (FIG. 3). The conduit 84 is connected to a control valve 86 mounted on the table 12, and the valve 86 has an operating member or plunger 88 which cooperates with an actuator member 90 loc'ated on the slide 34. The function and operation of the valve 86 willbe described hereinafter in connection with FIG. 8.

The opposite end of the motor 711 from where the cable 80 is connected, is connected to another conduit 92 also attached to the slide 34. The conduit 92 is connected -to an elbow tting 94 and to another coiled flexible conduit 96 which is positioned on the rail 26. The opposite end of the conduit 96 is connected to th-e hydraulic system of FIG. 8. When iiuid pressure is supplied to the motor 71B through the flexible conduit 80 the piston and rod assembly 68 moves to extended position, and in so doing causes the cutter tool 61? to be moved down into cutting engagement with a glass pane. On the other hand, when the flexible conduit 96 is supplying fluid pressure to the motor itl the piston and rod assembly 68 is retracted into the motor 71B and the cutter tool is thereby raised to its inoperative position as shown in FIG. 4.

The slide 34 also has a stud member 98 attached to one side edge thereof. The stud 98 is made of a magnetized material and is positioned to cooperatively engage a member 100 mounted on the rail 28 near the right end thereof as shown in FIG. 1. Engagement between the stud 98 and the member 100 takes place at the extreme end of trav-el of the slide just before a cutting operation starts, and is provided to momentarily stop the slide to allow time for cutter tool 60 to move downwardly into cutting engagement with the glass before the cutting operation begins. The entire operation of the cutter assernbly 2t) can be made automatic, or if desired, it can be manual.

A straight edge or rule 102 is mounted on the table 12 parallel to the track 18 and serves las a stop for accurately positioning a frame member 164 on which a glass pane 106 is positioned during cutting. The frame 1114 serves as a template on which the glass pane can be quickly and accurately located during cutting. It is important to note in this connection that the subject tool will accommodate any size or shape of frame within the limits of movement of the cutter assemblies. This means that a different size glass pane can be cut each time the machine is used without requiring any changes or adjustments in the machine except possibly when frames with different width frame pieces are used. The frames are held in position on the subject `device by clamping'means which will be described later.

The second movable cutter assembly 24 is mounted for movement on the track 22 which extends along the 4right side of the table 12 (FIG. l). The cutter assembly 24 is normally used to cut the shorter side of a pane and for this reason and also for the reason that it is more easily accessible, lends itself more readily to being manually operated rather than automatically operated like the assembly 20. It is clearly within the scope of the invention, however, to have both assemblies 213 and 24 fully or partially automated, as desired.

The track 22, like the track 18 includes two parallel rails 1118 an-d 110 supported adjacent their ends by brackets 112 and 114. The assembly 24 includes a slide member 116 with suitable bushings 118 that slide on the rails 108 and 110, and like the slide 34, the slide 116 has a tool carrier member 120 pivotally mounted on a bracket 122, and a cutter tool 124 similar to the cutter tool 66 is mounted on the carrier 1211 and is locked in position thereon by a set screw 126.

The carrier 120 for the cutter tool 124 also has an upwardly extending arm portion 127 that is pivotally Connected to piston and rod assembly 128 of fluid motor 13G. The motor 130 is mounted on a plate 132 that is pivotally connected to the slide 116 by a pivot shaft 134 to prevent binding between the piston and rod assembly 128 and the carrier 12d during operation thereof. A manually operated valve 136 is mounted behind the motor 130 and has an operating member 138 which controls the operation thereof. Immediately behind the valve 136 is a manual grip or handle 1411' which is grasped by the operator to move the assembly 24 along the rails 108 and 110. When the operator grasps the handle 140 he can Ialso operate the valve 136 which controls the raising and lowering of the cutter tool 124.

The valve 136 has -a connection 142 to the adjacent end of the motor 1311, and a second connection to one end of a coiled flexible conduit 144 positioned on the rail 115.3. The opposite end of the conduit 144 is connected to the fluid system as shown in FIG. 8. The fluid motor 130 also has a return spring 146 positioned therein lbetween the piston and rod assembly 128 and the left end of the motor housing as shown in FIG. 5. The return spring 146 is provided to return the piston and rod assembly 128 to an inoperative position when the valve plunger 138 is not actuated. In 4the inoperative position the cutter tool 124 is raised away from the table. Another conduit 147 (FIG. 8) is connected between the left end of the motor 131) and the valve 136 land provides 4a by-pass for the motor 130 which enables the spring 146 to move the piston and rod assembly 128 when the plunger 138 is not actuated.

The cutter assembly 24 is operated by taking hold of the handle 141) and moving the lassembly to the far end of the track 22 (the top in FIG. 1). The operator then depresses the valve plunger 138 to move the cutter tool 124 downwardly into cutting position. The operator then pulls the cutter assembly 24 along the track 22 while keeping t-he plunger 138 depressed. At the conclusion of the operation the plunger 138 is released to allow the return spring 146 to restore the cutter tool 124 to inoperative raised position. After a cutting operation is completed, slight downwardly pressure on the edge portion 106er of the glass pane (FIG. 1) will break the gl-ass along the line of the cut. During operation the coiled flexible conduit 144 will be stretched out along the rail 110 and subsequently will return to its unstretched condition. This will provide Huid pressure for operating the cutter tool 124 in all positions of the assembly 24.

In order to prolong the life of the cutter tools 60 and 124 an oil spray device 148 is provided 4to lubricate the blades 61 `and 12S (FIG. l). The oil spr-ay device 148 includes a tubular member 149 connected to the rail 110 and also a pair of spray nozzles 150 and 151 mounted on one end thereof. One of the nozzles is positioned to spray oil on the cutter blade 61 and the other is positioned to spray on the cutter blade 125. The spray device operates momentarily when the cutter assemblies 20 and 24 are at the ends of their travel just before a cutting operation. The spray device 148 is operated by valves 152 or 153 which respectively control the nozzles 15) and 151. The valve 152 has a plunger 154 which is located to be actu-ated by the slide members 34 near the end of its travel and the valve 153 has a plunger 155 which is positioned to be actuated yby the slide member 116. It is also contemplated to use wicking devices that are bumped by the cutter blades instead of providing spray devices.

Another straight edge or rule 156, similar to the rule 102 is mounted extending parallel to the track 22 -to provide means for quickly and accurately locating the frame 104 and the glass 196. It can now be seen that the frame 184 can be quickly and accurately located simply by moving it into abutment with the rules 1112 and 156.

When the frame 104 is positioned against the rules 102 `and 156 as shown in FIG. 1, hydraulic clamp means are actuated to grip and hold the frame in position while the cutting operations take place. The details of the clamp means are shown in FIGS. 6 and 7. The clamp means lare mounted on the underside of the table 12 in the areas of the `rules 102 and 156 and the clamp means associated with each rule are similar. The clamp means include clamp members 16d which are pivotally mounted on shafts 162. The shaft 162 for each set of clamps has a centrally located collar 164 mounted thereon, and the collar has a portion 1de connected to a piston and rod assembly 168 of a uid motor 17S. The motor 17d is mounted on a bracket 171 which is hingedly mounted to the underside of the table by a pivot shaft 172 thereby enabling the motor 1711 to operate without binding. The shaft 1,62 is rota-tably supported adjacent its ends on pillow block-s 174 which are slidable on the shafts 17o and `178 (FIG. 7). The location of the pillow blocks 174 on the shafts 176 and 178 can be adjusted to enable the clamp members to engage and clamp frames having different width frame members. The clamps 160 are movable by the motor 171B between the inoperative dotted outline position shown in FIG. 6 and the solid outline position engaging the frame members,

With the clamp members actuated by the hydraulic system Athe frame 1134 will be firmly held in position. The glass is then located on the frame 1114 with two edges thereof aligned with the -two unclamped frame members. The glass is now in position to be cut. The positioning of the glass takes only a few seconds to complete and when the glass is cut it lits the particular frame that was used as a template. Ars already noted the cutting can be accomplished completely automatically or in the case of assembly 24 it can be accomplished manually.

The hydraulic system for the subject device is shown in FIG. 8. The system includes a connection to a Huid pressure source (not shown) by a conduit 18d.

`One part of the system includes connected conduits 182, 134, 186, foot operated pedal valve 188, and conduits 1% and 192 which are connected to opposite ends of the fluid motor 58. The conduit 191i is also connected to another conduit 194 which is connected to the valve 86 and from there through the coiled conduit 89 to one end of the cutter operating motor '70. When the assembly 20 is in the left position (FIGS. l and 2), the valve plunger 8? associated with the valve 35 is engaged by member 919 to close the valve 156. This prevents fluid pressure from being applied to the left end of the motor 70 and maintains the cutter tool 60 in raised inoperative position. The raised condition of the cutter 60 is maintained as long as the assembly 24) is in its left position and even after the foot pedal 1&9 is depressed.

When the pedal 139 is depressed it actuates the valve 18S to apply pressure to the left end of motor 5S through the conduits 192 and 193. This causes the rack gear 5'4 to move to its extended position, and rotates the drive wheel 43 clockwise. This in turn moves the cutter assembly 20 rightwardly across the table. This continues as long as the pedal 139 is held depressed and until the magnetic stud 98 bumps the stop member Iii-t1 to stop the movement. During the time the assembly 2li is moving to the right pressure is also applied to the right end of the cutter lmotor 79 through conduits 192, 1% Iand 96 to prevent the cutter tool et) from moving downwardly.

When the assembly 20 is stopped and held in its right- Ward position with the pedal still depressed the operator as as much time as he needs to make last minute adjustments of the positions of the glass and the frame. When the operator is satislied that the glass and frame are properly positioned, he will let up on the pedal 139 thereby reversing the position of the pedal Valve 13S. This causes pressure to be applied to the right end of the drive motor SS through conduits 1% and 191. At the same time, pressure will also be applied through conduit 194, the valve 8o which is now open because the plunger 188 is not engaged with the member 90, and the coiled conduit to the left end of the motor 70. This causes the piston and rod assembly 68 to move rightwardly in a direction to lower the cutting tool di) into cutting engagement with the glass. While the cutter tool 69 is being lowered there is a momentary hesitation in the starting of the leftward movement of the assembly 26 due -to the magnetic engagement between the stud 98 and the member 10d. This is provided to assure that the tool 60 is in cutting position before the assembly starts to move. Thereafter the assembly 2l) will move to the left until the member moves against the valve plunger 88 and closes the valve 86. This will stop the assembly and also take pressure oil the cutter tool 60 allowing the cutter tool to return to inoperative position. Movement of the tool titl to inoperative position can be caused by a return spring in the motor 70 or it can be accomplished by providing separate hydraulic means connected to the right end of the motor 70.

An hydraulic system has advantages over an electrical system for the present device because it enables more flexibility in adjusting the cutting pressure and cutting speed.

The clamp means described in connection with FIGS. 6 and 7 are under control of a toggle operated valve 196 (FIG. 8). The toggle valve 196 is actuated when a frame 1114 is positioned against the rules 102 and 156 to hold the frame in position as shown in FIG. l, and is deactuated when the frame is to be removed.

The cutting assembly 24 on the operators right is not power driven and therefore requires only a Single fluid pressure conduit 198 connected to the coiled conduit 144. This supplies pressure for operating the cutter motor under control of the valve 136. When the valve 136 is actuated by pressing on the plunger 138 duid pressure is applied to the motor 13@ through conduit 142, and when the valve plunger is released the spring means 146 in motor 13e will restore the cutter tool 124 to its inoperative raised position. The rail 1&3 on the track 22 may also be provided with a stop collar 20G to limit .forward movement of the assembly 24.

The oiling devices for lubricating the `cutting blades has already been described and is shown in FIG. 8 connected to the fluid system by conduit .202.

FIG. 9 shows an electric circuit which can also be used instead of the hydraulic system `of FIG. 8 to control the operation of the device. The electric circuit has some advantages over a fluid system particularly because it does not require a special source of power and therefore it enables the machine to be more mobile. Generally speaking, however, experience has favored an hydraulically operated tool over an electrically operated tool.A

In the electrically operated machine the clamps are controlled by solenoids 210 and 212 under control of a toggle switch 214. When a frame is properly located on the table the switch 214 is closed to energize the solenoids 21@ and 212 and clamp the frame in position. The frame remains clamped until the switch 214 is operated to deenergize the solenoids. i

With the frame clamped, a glass pane is properly positioned on the frame and a foot pedal 216 is actuated to set the machine in operation. Actuation of the foot pedal closes a circuit to another solenoid 218 which is mounted on the cutter assembly 20 and is provided to raise the cutter tool 6G to inoperative position. The pedal also energizes drive motor 22@ operatively connected to the cutter assembly 2t) to move the cutter assembly rightwardly. The assembly moves rightwardly until it bumps into an actuator member 221 on a normally-open limit switch 222. When the actuator 221 is bumped the limit switch 22 closes a circuit which cnergizes a relay 224. The relay 224 has a plurality of movable contacts which transfer and establish other circuits. One of these circuits reverses the motor connections and by so doing reverses the direction of motor rotation to cause the assembly 20 to move to the left.

Another circuit establishes a hold circuit for the relay 224 and is held energized through a normally closed limit switch 226 which is under control of another member 228 also carried on the assembly Ztl. The hold circuit maintains the relay 224 energized until the assembly 20 has returned to its left position when the operator 228 moves against and opens the switch 226.

The relay 224 also has normally closed contacts in a circuit that controls the cutter solenoid 218. When the assembly Ztl begins to move to the right the solenoid 218 is energized and moves the cutter tool 66 upwardly into inoperative position. Therefore, as the motor moves the assembly 2t) to the right the cutter tool is raised and not engaged with the glass. However, when the assembly 20 reaches the end of its rightward travel and actuates the switch 222 to energize the relay 224, relay contacts in the circuit of the solenoid 23.8 open to deenergize the solenoid and to allow the cutter tool to move down into cutting engagement with the glass. This condition maintains until the member 228 engages and opens the switch 226 to deenergize the solenoid 218. The cycle can be repeated using the same or a different frame.

The assembly 24 like the assembly 20 can also be made automatic or as already pointed out it can be manual since it is relatively more accessible to the operator.

Many other variations and refinements of the electrical and hydraulic systems can be made without changing the basic nature of the invention.

Thus there has been shown and described a novel and versatile glass cutting tool or the like which fulfills all of the objects and advantages sought therefor. Many changes, modifications and variations of the device, however, will become apparent to those skilled in the art after considering this specication which discloses several embodiments thereof in conjunction with the accompanying drawings. All such changes, modifications and variations which do not depart from the spirit and scope of the invention are deemed to be covered by the invention which is limited only by the claims which follow.

What is claimed is:

1. A tool for cutting glass to fit a frame comprising a table with a work surface thereon, means on the table for accurately locating a frame in position to be used as a template for locating a glass pane to be cut to tit the frame, means movable into engagement with the frame to clamp the frame in said position, means on the frame for locating two adjacent sides of a glass pane to be cut to fit the frame, a pair of angularly related guide rails mounted above the table and extending parallel respectively to two different sides of the frame along which the glass pane is to be cut, a cutter assembly movably mounted on each of said guide rails, the frame locating means being positioned adjacent to the guide rails, each of said cutter assemblies having a cutter blade mounted on a movable support member in position to be moved into cutting engagement with a glass pane positioned on the frame to cut said pane along lines corresponding respectively to said different sides of the frame, means for selectively moving the blade support members between inoperative positions in which the associated blades are spaced from the pane and operative positions in which the associated blades are in cutting engagement with the pane, and means for moving said cutter assemblies back and forth along their associated rails, each of said blades being in cutting engagement with the pane during one direction of movement of the associated assembly.

2. The tool defined in claim ll wherein motor means are provided for moving at least one of said cutter assemblies along its associated guide rail.

3. The tool defined in claim wherein motor means are provided for moving at least one of said blade support members between its operative and inoperative positions.

4. The tool defined in claim l wherein means are provided at one end of each guide rail for lubricating the associated cutter blades.

5. The tool defined in claim l wherein said clamp means include a member pivotally mounted under the table, and means for moving said member between an inoperative position spaced from the frame and an operative position engaging the frame.

6. A tool for cutting a glass pane along two anguzarly related directions so that it will fit a frame structure defined by pairs of opposed connected frame members which define an opening for receiving the glass pane comprising a table with a working surface thereon, a pair of angularly related abutment members on said table in position to engage and accurately locate a frame structure moved thereagainst, means on the table movable into engagement with the frame structure to clamp the frame structure into engagement with said abutment members, means on the frame structure for engaging and accurately locating two adjacent side edges of a pane of glass to be cut to tit the frame, a guide rail mounted extending above the table and parallel respectively to each of said adjacent side edges of the pane of glass, a glass cutter assembly movable along each of said guide rails, the frame locating means being positioned adjacent to the guide rails, each of said assemblies including a cutter blade and movable support means therefor, means respectively for moving each of said cutter blades between an inoperative position spaced from the glass pane andV a position in which the blade is in cutting engagement therewith, and means for moving each of said cutter assemblies along its associated guide rail while the associated blade is engaged with the glass, said blades being positioned respectively to engage and cut the glass along two directions so that the cut glass will fit the frame structure.

7. The tool for cutting a glass pane defined in claim 6 wherein said means for moving the cutter blades include hydraulic means.

8. The tool for cutting a glass pane defined in claim 6 wherein said means for moving the cutter blades include solenoid means.

9. A tool for cutting glass panes and the like along two angularly related directions to fit a rectangular frame structure comprising a table with a working surface thereon, abutment means positioned on the table to engage and accurately locate a frame structure moved thereagainst, means movable into engagement with the frame structure to clamp the frame structure into engagement with said abutment means, means on the frame structure for locating at least two sides of a pane of glass to be cut to fit the frame, a guide rail positioned extending parallel to each of two adjacent sides of the frame structure, a cutter assembly movably mounted on each of said guide rails, the frame locating means being located adjacent to the guide rails, each of said cutter assemblies including a cutter element and means for moving said cutter element between positions in which it is spaced from the glass pane and in which it is in engagement therewith, said last named means including means for applying cutting pressure against the glass, and means for moving each of said cutter assemblies alternately back and forth along the associated guide rails.

l0. A tool for cutting panes of glass to tit rectangular frames comprising a pair of tracks mounted in perpendicular relationship to each other, a cutting assembly including a cutter blade movably mounted on each of said tracks, means for accurately locatinga rectangular frame structure such that the said tracks are parallel respectively to two adjacent sides of the frame structure, the frame locating means being positioned adjacent to the said tracks, means for clamping the frame structure in immobile condition dnring a glass cutting operation, means on the frame structure for accurately locating two side edges of a glass pane to be cut to t the frame structure, the opposite sides of said pane overlapping the opposite Q El) sides of the frame structure, and means for moving the 2,524,344 10/1950 English 83-522 cutting assemblies along their respective tracks While the 2,619,775 12/ 1952 Judd 225-965 associated cutter blades are in cutting engagement with 2,705,389 4/1955 Wyman 22S- 96.5

the glass pane. 2,711,617 6/1955 Trammell 22S-96.5 11. The tool dened in claim 10 wherein motor means 5 3,164,046 1/ i965 Arnoud 83-34l are provided for moving at least one of said cutting assemblies along its associated track, and means for stalling FOREIGN PATENTS the said motor driven cutting assembly prior to a cutting 554,275 10/1955; Canadaoperation long enough for the associated cutter blade to 668,633 8/1963 Canada be moved mto cutting engagement with the glass. lo 16433 11/1905 Germany References Cited lay the Examiner 3673 2/1911 Great Bumm' UNITED STATES PATENTS ANDREW R. JUHASZ, Primary Examiner.

418,961 1/1890 Pressley et al. 83--467 I, B. MCGUTRE, Assistant Examiner. 1,988,565 H1922 Owen 225A-96.5 19 

1. A TOOL FR CUTTING GLASS TO FIT A FRAME COMPRISING A TABLE WITH A WORK SURFACE THEREON, MEANS ON THE TABLE FOR ACCURATELY LOCATING A FRAME IN POSITION TO BE USED AS A TEMPLATE FOR LOCATING A GLASS PANE TO BE CUT TO FIT THE FRAME, MEANS MOVABLE INTO ENGAGEMENT WITH THE FRAME TO CLAMP THE FRAME IN SAID POSITION, MEANS ON THE FRAME FOR LOCATING TWO ADJACENT SIDES OF A GLASS PANE TO BE CUT TO FIT THE FRAME, A PAIR OF ANGULARLY RELATED GUIDE RAILS MOUNTED ABOVE THE TABLE AND EXTENDING PARALLEL RESPECTIVELY TO TWO DIFFERENT SIDES OF THE FRAME ALONG WHICH THE GLASS PANE IS TO BE CUT, A CUTTER ASSEMBLY MOVABLY MOUNTED ON EACH OF SAID GUIDE RAILS, THE FRAME ALONG WHICH MEANS BEING POSITIONED ADJACENT TO THE GUIDE RAILS, EACH OF SAID CUTTER ASSEMBLIES HAVING A CUTTER BLADE MOUNTED ON A MOVABLE SUPPORT MEMBER IN POSITION TO BE MOVED INTO CUTTING ENGAGEMENT WITH A GLASS PANE POSITIONED ON THE FRAME TO CUT SAID PANE ALONG LINES CORRESPONDING RESPECTIVELY TO SAID DIFFERENT SIDES OF THE FRAME, MEANS FOR SELECTIVELY MOVING THE BLADE SUPPORT MEMBERS BETWEEN INOPERATIVE POSITIONS IN WHICH THE ASSOCIATED BLADES ARE SPACED FROM THE PANE AND OPERATIVE POSITIONS IN WHICH THE ASSOCIATED BLADES ARE IN CUTTING ENGAGEMENT WITH THE PANE, AND MEANS FOR MOVING SAID CUTTER ASSEMBLIES BACK AND FORTH ALONG THEIR ASSOCIATED RAILS, EACH OF SAID BLADES BEING IN CUTTING ENGAGEMENT WITH THE PANE DURING ONE DIRECTION OF MOVEMENT OF THE ASSOCIATED ASSEMBLY. 